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Hyperbranched organic ionic liquid type metal corrosion inhibitor and preparation method thereof

A metal corrosion inhibitor and organic ion technology, applied in the field of hyperbranched organic ionic liquid type metal corrosion inhibitor and its preparation, can solve the problems of complex process, destruction of the original system, limitation, etc. The effect of corrosion and easy availability of raw materials

Pending Publication Date: 2022-03-11
HEZE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] So far, people have developed some methods to inhibit the corrosion of metals in aggressive media, such as coating non-metallic and metal protective layers, treating corrosive media, electrochemical protection, etc., but these methods may not have ideal anti-corrosion effects, Either it may cause damage to the original system, resulting in other problems, such as high cost, complicated process, difficult operation and limited application range

Method used

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  • Hyperbranched organic ionic liquid type metal corrosion inhibitor and preparation method thereof
  • Hyperbranched organic ionic liquid type metal corrosion inhibitor and preparation method thereof
  • Hyperbranched organic ionic liquid type metal corrosion inhibitor and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] This example provides an organic ionic liquid metal corrosion inhibitor 4',4''''-(((((ethane-1,2-diylbis(oxygen))bis(ethane-2,1-di Base)) bis(oxygen)) bis(4,1-phenylene)) bis(1,1',1''-trihexyl-[4,2':6',4''-terpyridine]- 1,1',1''-three) preparation of bromide. Structural formula is as follows:

[0032] .

[0033] (1) Add 1mmol p-hydroxybenzaldehyde and 2mmol 4-acetylpyridine into a 50mL conical flask, add 10mL ethanol, stir well, add 0.36g potassium hydroxide to the solution, stir at 200 rpm for 1 minute, mix The solution turns brown, then add 3 mL of concentrated ammonia water with a mass fraction of 25%, seal it, stir at 300 rpm, react for 24 hours, add glacial acetic acid to adjust the pH to 7, a light yellow precipitate appears, suction filter, acetonitrile 75 °C Recrystallization gave a white solid, namely 4-([4,2':6',4''-terpyridine]-4'-yl)phenol.

[0034] (2) Add 30mL THF solution to the three-necked flask, take 1mmol of triethylene glycol and add it to the b...

Embodiment 2

[0041] This example provides an organic ionic liquid metal corrosion inhibitor 4',4''''-(((((ethane-1,2-diylbis(oxygen))bis(ethane-2,1-di Base)) bis(oxygen)) bis(4,1-phenylene)) bis(1,1',1''-trihexyl-[4,2':6',4''-terpyridine]- Preparation of 1,1',1''-tri)bromide. This example is consistent with Example 1 if there is no special description.

[0042] (1) Add 2mmol p-hydroxybenzaldehyde and 4mmol 4-acetylpyridine into a 50mL conical flask, add 10mL ethanol, stir well, add 0.75g potassium hydroxide to the solution, stir at 200 rpm for 1 minute, mix The solution turns brown, then add 3 mL of concentrated ammonia water with a mass fraction of 25%, seal it, stir at 500 rpm, and add glacial acetic acid to adjust the pH to 7 after reacting for 24 hours. A light yellow precipitate appears, suction filter, and 8 ml of acetonitrile 75 °C recrystallization to obtain a white solid, namely 4-([4,2':6',4''-terpyridine]-4'-yl)phenol.

[0043] (2) Add 61mL THF solution into the three-necked f...

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Abstract

The invention relates to the field of organic metal corrosion inhibitors, in particular to a hyperbranched organic ionic liquid type metal corrosion inhibitor and a preparation method thereof. The synthetic method of the hyperbranched organic ionic liquid type metal corrosion inhibitor is simple, raw materials are easy to obtain, and the yield is high; the environment-friendly dendritic and hyperbranched quaternary ammonium salt nitrogen heterocyclic organic ionic liquid molecule is used as a corrosion inhibitor, can be self-assembled in a corrosive aqueous solution to form regular micro-nano particles, and can generate an extremely strong adsorption effect on the metal surface; and efficient corrosion inhibition on metal in a severe corrosive water medium is realized.

Description

technical field [0001] The invention relates to the field of organic metal corrosion inhibitors, in particular to a hyperbranched organic ionic liquid metal corrosion inhibitor and a preparation method thereof. Background technique [0002] Metals such as steel, copper, aluminum, etc. are often used in harsh corrosive media, such as acid, alkali, salt and other aqueous solutions, so metals are easily damaged by aggressive ion corrosion. Metal corrosion will not only cause huge economic losses, but also cause serious consequences such as safety accidents, environmental pollution, and ecological imbalance. Therefore, the viability of metals in chemical industry production has received great attention. The research on metal corrosion and effective corrosion inhibition in severe corrosive water environment is a major strategy related to the national economy and people's livelihood, and it is one of the problems that need to be solved urgently in the fields of chemical engineeri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/14C07D213/30
CPCC23F11/149C07D213/30
Inventor 王新潮王琦刘瑶刘聪聪彭云佩王娟
Owner HEZE UNIV
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